Question

A submarine can descend at a rate of 15 ft per minute. At 6:03 pm the submarine was at -20 ft and descending steadily. Where would the submarine be at 6:10 pm?

Answer 1

6:10-6:3=7 minutes
-15×7=-105 feet, so -105-20=-125 feet. As a result, the submarine would be -125 feet at 6:10 pm. Hope it help!